A source close to the multi-millionaire said at the time: "It's heartbreaking to see a little boy's Christmas ruined. Dogs are so important to so many of us. We just hope it helps lead to the safe return of Morse."

The puppy, who had tunnelled under the garden fence, was last seen outside the house being bundled into a pick up truck by a man.

Edward, who is three tomorrow, wrote: "Dear Father Christmas, I just want one present for Christmas this year, my dog Morse back. I’ve been a very good boy all year. Thank you, Edward."